And charles b



t. e e h S. e .e h s 3 Mw MU nu MR E. AM D..

(No Model.)

No. 446,359. Patented Peb.A 10, 1891.

w/TNESSES:

A TTOHNE YS h M 2. L kr fm mi t 9 H. 1M E 8 m M h 1... 4 m m 0 N M A S 1 .l vl m m/ .h 1D S B i 3 .nr d 6 ...b n c. n.. um a M n P W L m A G lrnnu @1.1- W, MR w, A A. m m P E m. 5 W o0.. fm M Uf 6 N e 4 W .M 4 m o. m N

3 sheets-Sheet 3.

(No Model.)

A. MALM. PAPER GUTTER.

Patented Feb. 10, 1891.-

sin?.

/ N VE/V TOI? .lexanderalpu Y WJ TNE SSE S ATTORNEYS' l t5 View of Fig. l.

UNITED STATES PATENT OFFICE.

ALEXANDER MALM, OF NEV YORK, ASSIGNOR TO THEODORE NV. SHERIDAN,

OF BROOKLYN, NEW JERSEY.

NEV YORK, AND CHARLES B. SHERIDAN, OF ORANGE,

PAPER-CUTTER'.

SPECIFICATION forming part of Letters Patent No. 446,359, dated February 10, 1891.

Application filed October 23, 1890. Serial No. 369,099. (No model.)

To all whom, t may concer/1.:

Be it known that I, ALEXANDER MALM, a citizen of the UnitedStates, residing at New York, in the county and State of New York,

5 have invented new and useful Improvements in PapereOutters, of which the followingr is a specification.

This invention relates to improvements in paper-cutters; and the invention consists in to the details of construction set forth in the following specification and claims, and illustrated in the annexed drawings, in which- Figure l is a face elevation of a paper-cutter containing my invention. Fig. 2 is a plan Fig. 3 is a' section along 0c,

Fig. l. Fig. et is a detail view sectioned along y y, Fig. 3. Fig. 5 is a section along e' .2', Fig. 2. Fig. 6 is a diagram hereinafter explained.

In the drawings, theletter A indicates a support or frame having a table B for the paper C, as also a clamping-bar D and a cutter or blade E to clamp and cut the paper. F is the cutter-head. The construction and 2 5 operation of these parts are well known and need no detailed description.

The driving-shaft G has the usual fast and loose pulleys HH and a fly-wheel I. Said shaft G gives motion to the driving-pinion 3o K, gearing into the gear-wheel M on shaft O. At either end of shaft O an eccentric (l, Figs. 3 and 4, is fixed to frame A. About cach eccentric sits a strap e, from which extends a wrist pin or connection f. A connecting' 35 piece or slide g joins each of the pins or connections f to the wrist-pins P, from which extend links Q to the cutter-head F. The gear M is located at one end of the shaft O, and one of vthe spokes of the gear M has a 4o slot or guideway h for one of the slides g, so as to form a carrier for the said slide. The other connecting piece or slide is guided in a similar guideway h, formed in a carrier or disk i, secured to the other end of shaft O.

XVhen the shaft O revolves in. the direction of the arrow, Fig. 3, the pins or connections f are carried about the eccentrics d, and in its descent each connection fis made to pass close to the shaft O. As the circumfer- 5o ent-ial speed diminishes the more closely the shaft O is approached, and as such close approach to the shaft furnishes great lever power, the descent ofthe connectionfand of the cutter-head F is slow, and said cutterhead is enabled to exert considerable force so as to carry its knife D through the material. In its ascent eachof the pinsftravels along that partof its eccentric d which lies farther from the shaft,O,and the consequent increase in circumferential speed causes the connectionsf and cutter-head F to rise or return rapidly to the starting-point. The guides 7i, allow the connections f sufficient. play to approach and recede from shaft O.

The movement of one of the pinsfis illustrated by the diagram, Fig. (i, in which O indicates the driving-shaft, d the stationary eccentric, and f the pin which imparts motion to the cutter-head F. As the pin f moves from the highest position (shown in full lines) to the lowest position (shown in dotted lines) the shaft O turns seven-twelfths (T725) of one revolution, and the returnmovement of the pin f from itslowest to its highest position is completed while the shaft O turns fivetwelfths (-152-) of one revolution; or, in other words, the downward stroke of the cutter-head will be completed in seven seconds and the upward stroke iu'iive seconds if the shaft O makes one revolution in twelve seconds.

IV hat I claim as new, and desire to secure by Letters Patent, isfl. In a paper-cutter, the combination,with a cutter or blade and a shaft O, of an eccentric, a pin or connection f, carried by the shaft about the eccentric, and a pitman connecting the pin and cutter, substantially as described.

In a papercutter, the combination,with a cutter, a shaft, an eccentric, and a pin or connection f, carried by the shaft about the eccentric, of a pitman for connecting thepin and cutter, and a carrieror disk for connect-1 ALEXANDER MALM.

Witnesses:

vWM. G. HAUFF, E. F. KASTENHUBER. 

